Recently encountered a strange issue when adding new distribution points, it will install successfully but show negative failures on the initial packages:
Capture.JPG

Its a bug MS has accepted it and hopefully it would have been addressed in the servicing branch.

 

https://blogs.technet.microsoft.com/umairkhan/2014/10/02/the-case-of-the-unexplained-the-package-gets-distributed-successfully-but-does-not-show-in-the-console/